/Engine/Source/Runtime/GeometryFramework/Public/Changes/MeshChange.h
FMeshChangerepresents an undoable change to a FDynamicMesh3. Currently only valid to call Apply/Revert when the Object is a one of several components backed by FDynamicMesh:UDynamicMeshComponent,UOctreeDynamicMeshComponent,UPreviewMesh
class FMeshChange : public [FToolCommandChange](API\Runtime\InteractiveToolsFramework\FToolCommandChange)
TUniquePtr<UE:...
DynamicMeshChange
TFunction< void...
OnChangeAppliedFunc
This function is called on Apply and Revert (last argument is true on Apply)